28242713 has 2 divisors, whose sum is σ = 28242714. Its totient is φ = 28242712.

The previous prime is 28242691. The next prime is 28242719. The reversal of 28242713 is 31724282.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14500864 + 13741849 = 3808^2 + 3707^2 .

It is a cyclic number.

It is not a de Polignac number, because 28242713 - 2⁶ = 28242649 is a prime.

It is not a weakly prime, because it can be changed into another prime (28242719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14121356 + 14121357.

It is an arithmetic number, because the mean of its divisors is an integer number (14121357).

Almost surely, 2^28242713 is an apocalyptic number.

It is an amenable number.

28242713 is a deficient number, since it is larger than the sum of its proper divisors (1).

28242713 is an equidigital number, since it uses as much as digits as its factorization.

28242713 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5376, while the sum is 29.

The square root of 28242713 is about 5314.3873588590. The cubic root of 28242713 is about 304.5337784273.

Adding to 28242713 its reverse (31724282), we get a palindrome (59966995).

The spelling of 28242713 in words is "twenty-eight million, two hundred forty-two thousand, seven hundred thirteen".